public class CylinderTest {
    public static void main(String[] args) {


            Cylinder c1 = new Cylinder();
    c1.setLength(1.4);
    c1.setRadius(2.3);
        System.out.println("面积是" + c1.findVolume());
        System.out.println("周长是" + c1.findArea());
    }
    }

